Deactivated users still receive emails from filter subscriptions

Summary

Email Filter Subscriptions are still sent after an user is marked as deactivated.

Steps to Reproduce

1. Create a JIRA user.
2. Log in as this user.
3. Create a filter.
   • Filter used: issuekey in issueHistory() ORDER BY lastViewed DESC
   • Ticked the option to still send an email even there's no issue found.
4. Subscribe to the filter.
5. Deactivate the user.

Expected Results

JIRA sends subscription notifications to active JIRA users.

Actual Results

Deactivated users still receive email from the filter subscription.

Workaround

The documentation mentioned in JRA-23462 is not accessible. Will update if there is any updated workaround available.